Google is making a version of its award-winning Math Olympiad AI model available to the public, but only to those subscribed to its premium Gemini Ultra plan. The new feature, called Deep Think, launches today for Ultra users, a tier that costs $250 per year (or $125 for the first three months).
Deep Think is based on the system that recently achieved a gold-medal standard at the International Math Olympiad (IMO), though the public version is tuned for speed and everyday usability. Internal testing suggests the consumer version performs at about a bronze-medal level on the 2025 IMO benchmark.
How it works
The model uses a “parallel thinking” approach, generating and processing multiple solution paths at once, and merging them if needed to find the most effective answer. It also benefits from extended “thinking time” — allowing more possibilities to be evaluated before producing an output — and from new reinforcement learning methods that improve its problem-solving skills over time.
According to Google, these features make Deep Think well-suited for iterative design work, scientific research, mathematical problem-solving, and coding. It has performed strongly on benchmarks such as Humanity’s Last Exam, which covers over 100 subjects across math, science, and the humanities.
Google also claims that Deep Think demonstrates improved content safety and a more objective tone than the standard Gemini 2.5 Pro, though it tends to decline more benign requests as a result of stricter safeguards.
Access and availability
Gemini Ultra subscribers can use Deep Think via the Gemini app by toggling it in the model selection menu. Access is limited to a fixed set of daily prompts. In the coming weeks, Google plans to make Deep Think available through the Gemini API for trusted testers, with both “tools-enabled” and “tools-disabled” versions.
The exact gold-medal-winning IMO variant will not be released to the general public. Instead, Google says it will be shared only with a select group of mathematicians and academics to support advanced research, with the aim of refining the model further based on expert feedback.
Deep Think’s release marks another move by Google to put specialized AI capabilities behind its highest subscription tier, potentially making advanced AI features less accessible to casual users but more appealing to professionals and researchers willing to pay for them.
